Anyone else have an issue with the trim hitting the ceiling and AC which appears to prevent the slide from coming in fully on the bottom?
Any chance you could take a few more picture, but showing more of the area?
Any chance that trim piece is mounted higher than it should be? Could the vertical piece need to be mount flush with the horizontal piece?
Can you share the rest of the story? Is this new? used? A new issue that just surfaced? Any previous repairs?
If this is a cable slide I would also make sure your cables are adjusted properly.